LXR linux/arch/m32r/platforms/m32104ut/setup.c

   1/*
   2 *  linux/arch/m32r/platforms/m32104ut/setup.c
   3 *
   4 *  Setup routines for M32104UT Board
   5 *
   6 *  Copyright (c) 2002-2005  Hiroyuki Kondo, Hirokazu Takata,
   7 *                           Hitoshi Yamamoto, Mamoru Sakugawa,
   8 *                           Naoto Sugai, Hayato Fujiwara
   9 */
  10
  11#include <linux/irq.h>
  12#include <linux/kernel.h>
  13#include <linux/init.h>
  14#include <linux/device.h>
  15
  16#include <asm/m32r.h>
  17#include <asm/io.h>
  18
  19#define irq2port(x) (M32R_ICU_CR1_PORTL + ((x - 1) * sizeof(unsigned long)))
  20
  21icu_data_t icu_data[NR_IRQS];
  22
  23static void disable_m32104ut_irq(unsigned int irq)
  24{
  25        unsigned long port, data;
  26
  27        port = irq2port(irq);
  28        data = icu_data[irq].icucr|M32R_ICUCR_ILEVEL7;
  29        outl(data, port);
  30}
  31
  32static void enable_m32104ut_irq(unsigned int irq)
  33{
  34        unsigned long port, data;
  35
  36        port = irq2port(irq);
  37        data = icu_data[irq].icucr|M32R_ICUCR_IEN|M32R_ICUCR_ILEVEL6;
  38        outl(data, port);
  39}
  40
  41static void mask_m32104ut_irq(struct irq_data *data)
  42{
  43        disable_m32104ut_irq(data->irq);
  44}
  45
  46static void unmask_m32104ut_irq(struct irq_data *data)
  47{
  48        enable_m32104ut_irq(data->irq);
  49}
  50
  51static void shutdown_m32104ut_irq(struct irq_data *data)
  52{
  53        unsigned int irq = data->irq;
  54        unsigned long port = irq2port(irq);
  55
  56        outl(M32R_ICUCR_ILEVEL7, port);
  57}
  58
  59static struct irq_chip m32104ut_irq_type =
  60{
  61        .name           = "M32104UT-IRQ",
  62        .irq_shutdown   = shutdown_m32104ut_irq,
  63        .irq_unmask     = unmask_m32104ut_irq,
  64        .irq_mask       = mask_m32104ut_irq,
  65};
  66
  67void __init init_IRQ(void)
  68{
  69        static int once = 0;
  70
  71        if (once)
  72                return;
  73        else
  74                once++;
  75
  76#if defined(CONFIG_SMC91X)
  77        /* INT#0: LAN controller on M32104UT-LAN (SMC91C111)*/
  78        irq_set_chip_and_handler(M32R_IRQ_INT0, &m32104ut_irq_type,
  79                                 handle_level_irq);
  80        /* "H" level sense */
  81        cu_data[M32R_IRQ_INT0].icucr = M32R_ICUCR_IEN | M32R_ICUCR_ISMOD11;
  82        disable_m32104ut_irq(M32R_IRQ_INT0);
  83#endif  /* CONFIG_SMC91X */
  84
  85        /* MFT2 : system timer */
  86        irq_set_chip_and_handler(M32R_IRQ_MFT2, &m32104ut_irq_type,
  87                                 handle_level_irq);
  88        icu_data[M32R_IRQ_MFT2].icucr = M32R_ICUCR_IEN;
  89        disable_m32104ut_irq(M32R_IRQ_MFT2);
  90
  91#ifdef CONFIG_SERIAL_M32R_SIO
  92        /* SIO0_R : uart receive data */
  93        irq_set_chip_and_handler(M32R_IRQ_SIO0_R, &m32104ut_irq_type,
  94                                 handle_level_irq);
  95        icu_data[M32R_IRQ_SIO0_R].icucr = M32R_ICUCR_IEN;
  96        disable_m32104ut_irq(M32R_IRQ_SIO0_R);
  97
  98        /* SIO0_S : uart send data */
  99        irq_set_chip_and_handler(M32R_IRQ_SIO0_S, &m32104ut_irq_type,
 100                                 handle_level_irq);
 101        icu_data[M32R_IRQ_SIO0_S].icucr = M32R_ICUCR_IEN;
 102        disable_m32104ut_irq(M32R_IRQ_SIO0_S);
 103#endif /* CONFIG_SERIAL_M32R_SIO */
 104}
 105
 106#if defined(CONFIG_SMC91X)
 107
 108#define LAN_IOSTART     0x300
 109#define LAN_IOEND       0x320
 110static struct resource smc91x_resources[] = {
 111        [0] = {
 112                .start  = (LAN_IOSTART),
 113                .end    = (LAN_IOEND),
 114                .flags  = IORESOURCE_MEM,
 115        },
 116        [1] = {
 117                .start  = M32R_IRQ_INT0,
 118                .end    = M32R_IRQ_INT0,
 119                .flags  = IORESOURCE_IRQ,
 120        }
 121};
 122
 123static struct platform_device smc91x_device = {
 124        .name           = "smc91x",
 125        .id             = 0,
 126        .num_resources  = ARRAY_SIZE(smc91x_resources),
 127        .resource       = smc91x_resources,
 128};
 129#endif
 130
 131static int __init platform_init(void)
 132{
 133#if defined(CONFIG_SMC91X)
 134        platform_device_register(&smc91x_device);
 135#endif
 136        return 0;
 137}
 138arch_initcall(platform_init);
 139